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參數(shù)資料
| 型號(hào)： | MSM7728 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 元件分類(lèi)： | Codec |
| 英文描述： | Single Rail Linear CODEC |
| 中文描述： | 單軌線性編解碼器 |
| 文件頁(yè)數(shù)： | 12/23頁(yè) |
| 文件大?。?/td> | 150K |
| 代理商： | MSM7728 |
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Semiconductor
MSM7728
12/23
AC Characteristics (Continued)
*1 Psophometric filter is used.
*2 AVT is the input level to output 0dBm0 pattern. VOL1 0dB setting.
AV
SPK
is the level to be output from SPKP pin when 0dBm0 pattern is input.
AV
EAR
is the level to be output from EAR pin when 0dBm0 pattern is input.
*3 VOL2 0dB setting
*4 The minimum value of group delay distortion is referenced.
Condition
(Fs = 8 kHz, V
DD
= 2.5 V to 3.6 V, Ta = –30°C to +85°C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Level
(dBm0)
3
–10
–40
–50
–55
Freq.
(Hz)
3
–10
–40
–50
–55
3
–10
–40
–50
–55
Transmit Gain Tracking
(Expected Value)
GT T1
GT T2
GT T3
GT T4
GT T5
GT R1
GT R2
GT R3
GT R4
GT R5
–0.3
+0.01
+0.3
Reference value
–0.3
–0.6
–0.03
–1.2
+0.15
–0.3
–0.06
Reference value
–0.3
–0.02
–0.6
–0.02
–1.2
–0.27
1020
0.0
+0.3
+0.6
+1.2
+0.3
dB
Receive Gain Tracking
(Expected Value)
1020
+0.3
+0.6
+1.2
dB
Overall Gain Tracking
GT 1
GT 2
GT 3
GT 4
GT 5
–0.4
+0.01
+0.4
Reference value
–0.4
–1.0
–0.03
–1.5
+0.15
1020
0.0
+0.4
+1.0
+1.5
dB
Nidle T
—
—
–72
–68
dBmOp
Nidle R
—
–76
Absolute Delay
AV Tt
–0.2
—
+0.2
AV Rt
–0.2
—
+0.2
T
d
1020
—
—
0.6
ms
0
A to A
BCLK
= 128 kHz
Transmit Group Delay
t
GD
T1
t
GD
T2
t
GD
T3
t
GD
R1
t
GD
R2
—
—
—
—
—
75
70
—
—
—
0.00
0.12
85
80
0.325
0.175
0.325
0.125
0.325
—
—
0
ms
*4
Receive Group Delay
ms
0
—
–74
Transmit Idle Channel Noise
(Expected Value)
Receive Idle Channel Noise
(Expected Value)
—
—
AIN: no signal
*1
dB
dB
V
DD
= 2.5
to 3.6 V
Ta = –30
to +85°C
Output Level
(Deviation of Temperature and Power)
500
600 to 2600
2800
500 to 2600
Crosstalk Attenuation
CR T
CR R
1020
dB
0
TRANS
RECV
RECV
TRANS
2800
*4
AV
SPK
AV
EAR
1020
0.275
0.245
0.309
0
Output Level
(Initial value)
AV T
0.350
0.312
0.393
MAO-PCMOUT
PCMIN-SPKP
PCMIN-EAR
Vrms
*3
*3
Analog to
Analog
*2
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